I'm going to have to admit that I had planned on testing out this game and giving it a go, however the fact that a entire Route with it's own story, h scenes and maybe even ending is basically walled off via credit card?
That's just actual shit. Because it absolutely forces people to have to continue to pay in order to continue down the "payed" route. Even if they had paid once and then months later decided to continue their save off a Public version it completely ruins their save because that content would of been locked again.
If you are seriously going to keep going this route, just charge for the damn game instead. Don't try and make DLC before your game is even at the 1.0